definition xeroderma
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Medical Dictionary Medical Definition of xeroderma. : a disease of the skin characterized by dryness and roughness and a fine scaly desquamation.
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- Erythema is a skin condition characterized by redness or rash. There are many types of erythema, including photosensitivity, erythema multiforme, and erythema nodusum.hotosensitivity is caused by a reaction to sunlight and tends to occur when something, such as an infection or a medication, increases your sensitivity to ultraviolet radiation. Erythema multiforme is characterized by raised spots or other lesions on the skin.
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Hereditary equine regional dermal asthenia (HERDA) Hereditary equine regional dermal asthenia (HERDA) Hereditary equine regional dermal asthenia (HERDA) is a genetic skin disease found in the Quarter Horse. The disease is characterized by hyperextensible, elastic skin, severe dermatologic lesions, and often scarring along the back and withers of affected horses.
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- Definition of Pyoderma gangrenosum. Pyoderma gangrenosum: An ulcerating condition of skin that results in heaped borders with a typical appearance. Pyoderma gangrenosum appears to be mediated by the immune system, but the exact cause is unknown. The lesion usually begins as a soft nodule on the skin that then ulcerates. The ulcer enlarges, and the skin at the edge is purple-red.
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- Xeroderma pigmentosum is caused by mutations in genes that are involved in repairing damaged DNA. DNA can be damaged by UV rays from the sun and by toxic chemicals such as those found in cigarette smoke. Normal cells are usually able to fix DNA damage before it causes problems.eurological abnormalities are also thought to result from an accumulation of DNA damage, although the brain is not exposed to UV rays. Researchers suspect that other factors damage DNA in nerve cells. It is unclear why some people with xeroderma pigmentosum develop neurological abnormalities and others do not.
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- Erythema is a skin condition characterized by redness or rash. There are many types of erythema, including photosensitivity, erythema multiforme, and erythema nodusum.Photosensitivity is caused by a reaction to sunlight and tends to occur when something, such as an infection or a medication, increases your sensitivity to ultraviolet radiation.rythema multiforme is characterized by raised spots or other lesions on the skin. It is usually caused by a reaction to medications, infections (especially herpes simplex virus), or illness.
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ectoderm Medical Definition of ectoderm. 1  1: the outermost of the three primary germ layers of an embryo. 2  2: a tissue (as neural tissue) derived from ectoderm.
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- Mutations in this gene or some other NER components result in Xeroderma pigmentosum, a rare autosomal recessive disorder characterized by increased sensitivity to sunlight with the development of carcinomas at an early age.Alternatively spliced transcript variants have been found for this gene.ummary. This gene encodes a component of the nucleotide excision repair (NER) pathway. There are multiple components involved in the NER pathway, including Xeroderma pigmentosum (XP) A-G and V, Cockayne syndrome (CS) A and B, and trichothiodystrophy (TTD) group A, etc.
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Xanthomonas campestris Xanthomonas campestris is an aerobic, Gram-negative rod known to cause the black rot in crucifers by darkening the vascular tissues. Host associated, over 20 different pathovars of X. campestris have been identified by their distinctive pathogenicity on a wide range of plants including crops and wild plants.
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Transdermal Transdermal Definition - Transdermal refers to the application of a medicinal substance from an adhesive patch placed on the skin, delivering small... Transdermal Definition - Transdermal refers to the application of a medicinal substance from an adhesive patch placed on the skin, delivering small...
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Definition of 'xeroderma' Example sentences containing 'xeroderma'. The nine-year-old has xeroderma pigmentosum, an incurable and rare genetic disorder that creates cancerous growths on her face and makes exposure to sunlight very dangerous.
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hyperkeratosis Also called x-disease. Veterinary Pathology. a disease of cattle resulting from their physical contact with or eating of objects or food contaminated by wood preservatives or machinery lubricants containing highly chlorinated naphthalenes, characterized by thickening and hardening of the skin, abnormal secretion of tears and saliva, and diarrhea.
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Xeroderma Common causes [edit]. Xeroderma is a very common condition. It happens more often in the winter where the cold air outside and the hot air inside creates a low relative humidity. This causes the skin to lose moisture and it may crack and peel. Bathing or hand washing too frequently, especially if one is using harsh soaps, can contribute to xeroderma.
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- xenograft. noun xe·no·graft \ˈzen-ə-ˌgraft, ˈzēn-\. : a graft of tissue taken from a donor of one species and grafted into a recipient of another species—called also heterograft, heterotransplant, xenotransplant; compare homograft.
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transdermal Medical Definition of transdermal. : relating to, being, or supplying a medication in a form for absorption through the skin into the bloodstream transdermal drug delivery a transdermal nicotine patch.
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Xerox Xerox Corporation, Ltd. is a provider of document management technology, such as printers, photocopiers and multi-function peripherals (MFP) as well as related services. The multinational company's headquarters are in Norwalk, Connecticut. Xerox derives from xerography, a technology for duplicating images and documents.
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- The different meanings of the name Arwen are: The meaning of the name “Arwen” is different in several languages, countries and cultures and has more than one possibly same or different meanings available..adslot_1 { width: 336px; height: 280px; } @media (max-width:350px) { .adslot_1 { width: 300px; height: 250px; } }.lso note the spelling and the pronunciation of the name Arwen and check the initials of the name with your last name to discover how it looks and sounds. The history and meaning of the name Arwen is fascinating, learn more about it.
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What is xeroderma pigmentosum? Their windows are covered with protective film, blinds and curtains. They only venture outdoors at night. Even walking into a room lit by fluorescent bulbs can be risky. They suffer from a rare condition called xeroderma pigmentosum (XP).In the United States, the frequency of cases is about one in every 250,000 people [source: Diwan ]. This genetic condition affects a person's ability to recover from ultraviolet radiation.he third stage involves the development of skin cancer. While the skin's sensitivity to ultraviolet radiation is the most common symptom of XP, some children with the disease suffer other problems. Around 20 percent of children with XP also suffer neurological damage.
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Smegma Smegma (Greek smēgma) is a combination of shed skin cells, skin oils, and moisture. It occurs in both male and female mammalian genitalia. In female bodies, it collects around the clitoris and in the folds of the labia minora; in males, smegma collects under the foreskin
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Xerophthalmia Xerophthalmia (/ˌzɪərˌɒfˈθaelmiːə/ ; ˌzɪərˌɒfˈθælmiːə greek for dry, eyes FROM = ξηροφθαλμία, ξηρός + dry, οφθαλμός) eye is a medical condition in which the eye fails to produce. tearshe damage to the cornea in vitamin A associated xerophthalmia is quite different from damage to the retina at the back of the globe, a type of damage which can also be due to lack of vitamin A, but which is caused by lack of other forms of vitamin A which work in the visual system.
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- Definition of MESODERM. : the middle of the three primary germ layers of an embryo that is the source of many bodily tissues and structures (as bone, muscle, connective tissue, and dermis); broadly: tissue derived from this germ layer.— me·so·der·mal \ˌme-zə-ˈdər-məl, ˌmē-, -sə-\ adjective.See mesoderm defined for kids.ADVERTISEMENT. the middle of the three primary germ layers of an embryo that is the source of many bodily tissues and structures (as bone, muscle, connective tissue, and dermis); broadly: tissue derived from this germ layer. — me·so·der·mal \ˌme-zə-ˈdər-məl, ˌmē-, -sə-\ adjective. See mesoderm defined for kids. ADVERTISEMENT.
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- Synonyms: xanthochromia, xanthoderma2. The definition information for yellow skin is provided by Stedman's. You can search our medical dictionary here.Stedman's, part of Lippincott Williams & Wilkins, provides a comprehensive line of health-science publications for healthcare professionals and medical students.ynonyms: xanthochromia, xanthoderma2. The definition information for yellow skin is provided by Stedman's. You can search our medical dictionary here.
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- Cross pure-bred pea plants to identify dominant flower color. HI! Xeroderma pigmentosum (XP) is a recessive hereditary disease that causes extreme sensitivity to ultraviolet light. Most patients die at a young age after exposure to the sun causes skin cancer.James Cleaver hypothesized that a defect in a DNA repair system caused the disease.ross pure-bred pea plants to identify dominant flower color. HI! Xeroderma pigmentosum (XP) is a recessive hereditary disease that causes extreme sensitivity to ultraviolet light. Most patients die at a young age after exposure to the sun causes skin cancer.
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Xeroderma pigmentosum. Xeroderma pigmentosum, or XP, is an autosomal recessive genetic disorder of DNA repair in which the ability to repair damage caused by ultraviolet light is deficient.
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Marriage Counselors: 10 Things They Donât Want You To Know Most courts try to keep marriage counselors out of the proceedings, though, unless they are testifying to something serious, Altschuler says. Most of the cases where he's seen a marriage therapist testify focused on admissions of abuse that were made in session. It's more common that seeing a marriage counselor simplifies a divorce, he says, by helping a client figure out what they want and how best to proceed.
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erythema dyschromicum perstans erythema multiforme. A rash usually caused by an immune response to drugs or to an infection, esp. herpes simplex virus. It may express itself on the skin in multiform ways, including macules, papules, blisters, hives, and, characteristically, iris or target lesions.